Manually operated alarm



FIG. 1 is a perspective view of a manually operated alarm showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is an end elevational view thereof, the end opposite being substantially a mirror image of the end shown;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a manually operated alarm, as shown and described. 